Compositions and process of using in refrigeration
AssigneeE. I. Du Pont de Nemours and Company
InventorsThomas M. Deeb, George K. Henry, Heather L. Bergmann
Life of this patent
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Abstract
A blend of refrigerant with at least one fluorinated hydrocarbon, in which the weight ratio of fluorine-to-carbon is from about 0.5 to 5, and which has an SUS viscosity at 100.degree. F. of at least 50 and a pour point of less than about -20.degree. C. is disclosed for use in compression refrigeration.
Claims13
A composition for use in compression refrigeration comprising:
- (a) a saturated hydrocarbon having 1-4 carbon atoms that is partially or fully substituted with at least one atom of chlorine or fluorine and having a normal boiling point in the range of -80.degree. C. to +50.degree. C.;
- and
- (b) a sufficient amount to provide lubrication of at least one fluorinated hydrocarbon in which the weight ratio of fluorine-to-carbon is from about 0.5 to 5 and having an SUS viscosity at 100.degree. F. of at least 50.
A lubricant adapted for use in compression refrigeration with a saturated hydrocarbon refrigerant having 1-4 carbon atoms that is partially or fully substituted with at least one atom of chlorine or fluorine and has a normal boiling point in the range of -80.degree. C. to +50.degree. C., consisting essentially of at least one fluorinated hydrocarbon in which the ratio of fluorine-to-carbon is from about 0.5 to 5, and has an SUS viscosity at 100.degree. F. of at least 50 and a pour point of less than -20.degree. C.
A method for lubricating compression refrigeration equipment using as the refrigerant a saturated hydrocarbon having 1-4 carbon atoms that is partially or fully substituted with at least one atom of fluorine or chlorine and has a normal boiling point in the range of -80.degree. C. to +50.degree. C. consisting essentially of using 10-50% by volume of the combination with said refrigerant of at least one fluorinated hydrocarbon in which the weight ratio of fluorine-to-carbon is from about 0.5 to 5 and has an SUS viscosity at 100.degree. F. of 100 to 1200 and a pour point of less than -20.degree. C.
Dependencies are inferred from the claim text.